So China launched a Long March 5 rocket on Apr 29 to deliver the core section of their new Tiangong space station. They have lost control of the rocket in low orbit and the rocket is on it’s way back into the atmosphere. The US army has named this object 2021-035B.
There is no telling where or when 2021-035B will make impact. It will pass over Taiwan around tonight at midnight.
A similar event happened last year, when China lost control over another Long March 5 rocket, when ended up crashing into the Atlantic near West Africa last May. A 12 meter long section crashing into a village in Ivory Coast.